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Heart|Natural|GIA

2.51ct J SI2 Heart Natural Diamond

ID • J/SI2 • GIA 1539778374

Certificate GIA 1539778374

Diamond specifications and retailer prices

From $14,429 AUD
As of November 4, 2026
Save $1,509 AUD (9%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $22,237 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 2.51ct natural heart diamond

This 2.51ct natural heart sits in the two to three carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1539778374. Listed at 12 retailers as of November 4, 2026, with a relatively tight 10% spread, which is unusual at this carat range and suggests competitive pricing across the listings. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

2.51
Carat
J
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1539778374
Dimensions9.20 × 8.32 × 5.64 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle, Indented Natural
Top View
9.20 mm8.32 mm2.51 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1539778374
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $22,237 AUD|Low: $11,940 AUD|High: $23,499 AUD|Avg: $15,794 AUD|-5.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
October 9, 2026
Retailer 16$11,940 AUD
Retailer 11$12,493 AUD
Retailer 8$13,200 AUD
Retailer 7$13,499 AUD
Retailer 5$14,117 AUD
Retailer 6$14,429 AUD
Retailer 15$14,727 AUD
Retailer 10$14,865 AUD
Retailer 9$15,938 AUD
Retailer 3$15,954 AUD
Retailer 2$15,976 AUD
Retailer 14$16,200 AUD
Retailer 17$16,325 AUD
Retailer 12$16,664 AUD
Retailer 4$18,408 AUD
Retailer 13$21,032 AUD
NZ Jewellers$22,237 AUD

17 data points across 17 retailers

12 retailers$14,429 AUD to $15,938 AUD

Retailer 1
-
$11,940 AUD
Price last confirmed 30 days ago
Retailer 2
-
$13,200 AUD
View
Price last confirmed 30 days ago
Retailer 3
-
$14,117 AUD
View
Price last confirmed 30 days ago
A
Retailer 4
-
$14,429 AUD
View
Retailer 5
-
$14,727 AUD
View
Price last confirmed 30 days ago
B+
Retailer 6
-
$15,938 AUD
View
Retailer 7
-
$15,954 AUD
View
Price last confirmed 30 days ago
Retailer 8
-
$16,200 AUD
View
Price last confirmed 37 days ago
Retailer 9
-
$16,325 AUD
View
Price last confirmed 29 days ago
Retailer 10
-
$18,408 AUD
View
Price last confirmed 39 days ago
Retailer 11
-
$21,032 AUD
View
Price last confirmed 30 days ago
Most Expensive
NZ Jewellers
f259cb77-0912-443c-8cb3-ebe9ee0f0ec2 · Sep 30
$22,237 AUD
$15,279 USD
View
Price last confirmed 37 days ago
11 more retailers have this diamond
Prices start from $14,429 AUDSave up to $1,509 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
2.51ct Heart
$14,429 AUD